Browsing Productos de investigación by Title
Now showing items 273-292 of 796
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Early characteristics and predictors of clinical severity in Autism Spectrum Disorder
(Universidad CES, 2019)Significant efforts have been made to detect Autistic Spectrum Disorder (ASD) during the first years of life, with positive effects on the prognosis of children. However, in countries such as Colombia early identification ... -
Early prediction of severe maternal morbidity using machine learning techniques
(Springer Verlag, 2016)Severe Maternal Morbidity is a public health issue. It may occur during pregnancy, delivery, or puerperium due to conditions (hypertensive disorders, hemorrhages, infections and others) that put in risk the women’s or ... -
Economic dispatch in DC Microgrids considering different battery technologies: A Benchmark Study
(Cartagena de Indias, 2020-11-25)Large penetration of variable renewable sources and electronic loads put short-term stress on microgrids. Energy storage systems account for a reliable way to mitigate these issues. However, depending on the electro-chemistry, ... -
Economic Dispatch of BESS and renewable generators in DC microgrids using voltage-dependent load models
(MDPI AG, 2019)This paper addresses the optimal dispatch problem for battery energy storage systems (BESSs) in direct current (DC) mode for an operational period of 24 h. The problem is represented by a nonlinear programming (NLP) model ... -
Economic dispatch of energy storage systems in dc microgrids employing a semidefinite programming model
(Elsevier Ltd, 2019)A mathematical optimization approach for the optimal operation focused on the economic dispatch for dc microgrid with high penetration of distributed generators and energy storage systems (ESS) via semidefinite programming ... -
Economic dispatch of renewable generators and BESS in DC microgrids using second-order cone optimization
(Campus TecnológicoIngeniería Eléctrica, 2020-04-03)A convex mathematical model based on second-order cone programming (SOCP) for the optimal operation in direct current microgrids (DCMGs) with high-level penetration of renewable energies and battery energy storage systems ... -
Economic lot scheduling with deliberated and controlled coproduction
(2012)This paper presents an algorithm to define the optimal parameters for deliberated and controlled coproduction in an economic lot scheduling problem setting (DCCELSP). Coproduction is said to be deliberated and controlled ... -
Economic shocks and their efect on the schooling and labor participation of youth: evidence from the metal mining price boom in Chilean counties
(Cartagena de Indias, 2021-06-11)We analyze the efect of an exogenous economic shock on youth, specifcally their incentive for preferring to participate in the labor market over continuing their education. We examine the Chilean case and the sustained ... -
Ecotoxicological assessment of perchlorate using in vitro and in vivo assays
(Springer Verlag, 2018)Perchlorate is an inorganic ion widespread in the environment, generated as a natural and anthropogenic pollutant, with known endocrine disruption properties in the thyroid gland. Nonetheless, there are few reports of its ... -
Editorial
(2008) -
EEG feature selection for ADHD detection in children
(Cartagena de Indias, 2020-11-03)Attention deficit and hyperactivity disorder (ADHD) is a medical condition that affects approximately 7% of children worldwide. The diagnosis of ADHD can be done using psychological tests and electroencephalography (EEG). ... -
Effect of a commercial air valve on the rapid filling of a single pipeline: A numerical and experimental analysis
(MDPI AG, 2019)The filling process in water pipelines produces pressure surges caused by the compression of air pockets. In this sense, air valves should be appropriately designed to expel sufficient air to avoid pipeline failure. Recent ... -
Effect of deficit irrigation on yield, quality, and costs of the production of native spearmint
(American Society of Civil Engineers (ASCE), 2014)Water-saving strategies aimed at improving water use efficiency need to be applied in agriculture today to ensure sustainable use of scarce water resources. This article presents results of a 2-year study done at Washington ... -
Effect of the non-stationarity of rainfall events on the design of hydraulic structures for runoff management and its applications to a case study at Gordo Creek watershed in Cartagena de Indias, Colombia
(MDPI AG, 2018)The 24-h maximum rainfall (P 24h-max ) observations recorded at the synoptic weather station of Rafael Núñez airport (Cartagena de Indias, Colombia) were analyzed, and a linear increasing trend over time was identified. ... -
Effective Perihelion Advance and Potentials in a Conformastatic Background with Magnetic Field
(Hindawi Limited, 2016)Exact solutions of the Einstein-Maxwell field equations for a conformastatic metric with magnetized sources are investigated. In this context, effective potentials are studied in order to understand the dynamics of the ... -
Effectiveness of a visual noise warning system on noise levels in a surgical ICU: A quality improvement programme
(Lippincott Williams and Wilkins, 2019)BACKGROUNDThe effects of noise are harmful to patients in the ICU environment, and the latter are particularly noisy places. High noise levels seem to be a factor in sleep disturbance, which can, in turn, result in increased ... -
Effects of orifice sizes for uncontrolled filling processes in water pipelines
(Cartagena de Indias, 2022-03-12)The sizing of air valves during the air expulsion phase in rapid filling processes is crucial for design purposes. Mathematical models have been developed to simulate the behaviour of air valves during filling processes ... -
Efficient operative cost reduction in distribution grids considering the optimal placement and sizing of d-statcoms using a discrete-continuous vsa
(Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2021-03-02)The problem of reactive power compensation in electric distribution networks is addressed in this research paper from the point of view of the combinatorial optimization using a new discrete-continuous version of the vortex ... -
Efficient reduction in the annual investment costs in ac distribution networks via optimal integration of solar pv sources using the newton metaheuristic algorithm
(Cartagena de Indias, 2021-12-05)This research addresses the problem of the optimal placement and sizing of (PV) sources in medium voltage distribution grids through the application of the recently developed Newtonmetaheuristic optimization algorithm ... -
Elastodynamic analysis of thick multilayer composite plates by the Boundary Element Method
(Tech Science Press, 2015)Dynamic stress analysis of laminated composites plates represents a relevant task in designing of aerospace, shipbuilding and automotive components where impulsive loads can lead to sudden structural failure. The mechanical ...
